| Manufacturer | Model | Version | Engine code | Construction type | Construction start | Construction end | Pk | Power kw |
| Manufacturer | Productnumber |
| FORD | 1076417 |
| FORD | 7317054 |
| FORD | 95VW 7A543 BD , 95VW7A543BD |
| FORD | 95VW7A543BC |
| FORD | 95VW7A543BD |
| SEAT | 7M0 721 401 D , 7M0721401D |
| SEAT | 7M3 721 401 , 7M3721401 |
| SEAT | 7M3 721 401 A , 7M3721401A |
| SEAT | 7M3721401 |
| VW | 7M0 721 401 A , 7M0721401A |
| VW | 7M0 721 401 B , 7M0721401B |
| VW | 7M0 721 401 C , 7M0721401C |
| VW | 7M0 721 401 D , 7M0721401D |
| VW | 7M3 721 401 , 7M3721401 |
| VW | 7M3 721 401 A , 7M3721401A |
| VW | 7M3721401 |
| VW | TM0 721 401 D , TM0721401D |
| Usage numbers |
| CM145 |
The Master Cylinder, clutch (0 986 486 050) generates hydraulic pressure for smooth clutch operation. Replacing a worn cylinder with Porza quality restores reliable gear shifting and pedal response.
Bosch – Quality and Innovation in Car Parts
Bosch is a globally recognized leader in automotive technology and car parts. Founded in Germany in 1886, the brand has built a strong reputation for reliability, technical innovation, and premium-quality products for over a century. The Bosch Car Parts division offers an extensive range of components for both passenger cars and commercial vehicles, compatible with nearly all makes and models.
The product range includes brake systems, spark plugs, batteries, wiper blades, filters, sensors, and electronic components. Bosch is also a market leader in engine management systems and vehicle electronics, including ABS, ESP, and fuel injection systems. Every part is manufactured to the highest OEM standards and undergoes rigorous quality control to ensure performance and safety.
A clutch master cylinder is a hydraulic component that converts the force applied to the clutch pedal into hydraulic pressure. This pressure is transmitted through the clutch line to the slave cylinder, which disengages the clutch from the engine. It enables smooth gear shifting and precise control over power transmission in manual and some automated transmissions.
Key specifications include bore diameter, stroke length, mounting configuration, and connection type for the hydraulic line. The cylinder is typically made from aluminum or reinforced composite materials for durability and weight efficiency. Internal seals are made from EPDM rubber or similar materials, compatible with clutch fluids such as DOT 3, DOT 4, or mineral oil depending on the system. It must withstand hydraulic pressures and operating temperatures typically ranging from 120–150°C.
Replacement is necessary when there are signs of fluid leakage, loss of pressure, difficulty shifting gears, or a spongy or unresponsive clutch pedal. Internal wear, seal failure, or corrosion can affect performance. In some cases, a repair kit may be used, but severe damage usually requires full replacement.
Porza offers a fit guarantee option where your vehicle details, such as license plate or VIN, are checked against product specifications. This ensures the clutch master cylinder matches your specific vehicle configuration and hydraulic system, reducing the risk of incorrect fitment.
Porza supplies high-quality transmission and hydraulic components with fast delivery across Europe. Customers can order online or choose in-store pickup in the Netherlands, Germany, or Belgium. This allows quick and flexible access to essential parts for both professional workshops and individual users, with reliable European-wide shipping.
If you select the fit guarantee, Porza verifies compatibility before shipment. If the product does not fit or meet expectations, it can be returned according to the return policy. This ensures a secure and risk-free purchasing experience.